1652720823 has 48 divisors (see below), whose sum is σ = 2623604256. Its totient is φ = 996433920.

The previous prime is 1652720819. The next prime is 1652720857. The reversal of 1652720823 is 3280272561.

It is not a de Polignac number, because 1652720823 - 2² = 1652720819 is a prime.

It is a super-2 number, since 2×1652720823² = 5462972237555594658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652720863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1213663 + ... + 1215023.

It is an arithmetic number, because the mean of its divisors is an integer number (54658422).

Almost surely, 2^1652720823 is an apocalyptic number.

1652720823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1652720823 is a deficient number, since it is larger than the sum of its proper divisors (970883433).

1652720823 is a wasteful number, since it uses less digits than its factorization.

1652720823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1652720823 is about 40653.6692439932. The cubic root of 1652720823 is about 1182.3149096093.

The spelling of 1652720823 in words is "one billion, six hundred fifty-two million, seven hundred twenty thousand, eight hundred twenty-three".